CVE-2025-59837

Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to server-side request forgery (SSRF) and potentially cross-site scripting (XSS). This vulnerability exists due to an incomplete fix for CVE-2025-58179. Fixed in 5.13.10.

CVSS 3.1

7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWEs

CWE-79, CWE-918

Published

2025-10-28

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• astro:astro

Packages (OSV)

References

• https://github.com/withastro/astro/commit/1e2499e8ea83ebfa233a18a7499e1ccf169e56f4
• https://github.com/withastro/astro/commit/9ecf3598e2b29dd74614328fde3047ea90e67252
• https://github.com/withastro/astro/security/advisories/GHSA-qcpr-679q-rhm2

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